Pololu Universal Aluminum Mounting Hub for 5mm Shaft M3 Holes (2 Pack)

The Pololu universal aluminum mounting hub allows you to mount custom wheels and mechanisms to 5 mm motor shafts. The hubs are sold in pairs. The set includes one Allen wrench and two M3 set screws for securing the hubs to motor shafts. Each hub has four M3 threaded holes for M3 screws (not included).

AUD$ 13.95

In stock in Australia  

Shipping from $2.90

+737 more from our supplier in 7-10 days

Our Code: MEC-30181

Supplier Link: [Pololu MPN:1998]


These universal mounting hubs are designed to work with most 5 mm shafts, including round shafts such as those on our stepper motors and “D” shafts. Each hub has four mounting holes for M3 screws (not included), letting you mount custom wheels or mechanisms to your motors. M3 hex set screws (one included for each hub) allow secure coupling of shaft to hub. A 1.5mm hex wrench is included for use with the set screws.

Kit Includes:

  • Two hubs
  • Set screws for fixing the hub to a shaft
  • 1.5mm Hex wrench to fit the set screws
We also stock M3 machine screws of various lengths that can be used to fit wheels to these hubs.

File downloads

Pololu universal aluminum mounting hub for 5mm shaft, M3 holes mechanical drawing (34k pdf)

Related Products